You could have downloaded XMCalc 3.2 from our software library for free. This free program was originally designed by Harry J. Smith, Private individual. The most popular version among the software users is 3.2. The program's installer file is commonly found as XMCalc.exe. The software lies within Office Tools, more precisely Calculators.
From the developer:
XMCalc - Extra Precision Floating-Point Matrix Calculator, C# Version
XMCalc is a freeware calculator program with the following features:
- Can calculate with real matrices, real scalars and quaternions
- Extra precision complex numbers to millions of decimal places
- Uses Fast Hartley Transform to speed-up long multiplies
- Separate input and output notation, base 2 to base 36
- Efficient Transcendental functions
- Hyperbolic functions
You may want to check out more software, such as Free QuData Calculator, iCalc or Calculate My Loan, which might be related to XMCalc.